The invention discloses a vehicular ignition-flameout state judging method, comprising: acquiring current vibration information and first displacement information of a vehicle; if the vibration information is greater than a preset vibration threshold and the first displacement information is greater than the preset displacement threshold, updating the ignition-flameout state of the vehicle to ignition state; if the vibration information is greater than the preset vibration threshold and the first displacement information is less than or equal to the preset displacement threshold, updating theignition-flameout state to under-determination ignition state; if the vibration information is less than or equal to the preset vibration threshold and second displacement information is greater thanthe preset displacement threshold, updating the ignition-flameout state to under-determination flameout state; if the vibration information is less than or equal to the preset vibration threshold andthe second displacement information is less than or equal to the preset displacement threshold, updating the ignition-flameout state to flameout state. The invention also discloses a vehicular ignition-flameout state judging system and a computer-readable storage medium. The vehicular ignition-flameout state judging method has high accuracy of judging results.